A) Sensor number: 2-4 pcs
B) Detector type:drilling or stick-on
C) Stage-by-stage sound alarm to avoid colliding
D) On backing the car, the rear sensors detect obstacles behind the car auto-matically
E) Versatile detection range

F) Sensor type for optional

 

Specifications
Working voltage: 9-27V
input: 2.5W(max)
Beeper: 90-105dB
Working tempreture: --40c--+80c
Frequency: 40KHZ
Best detection distance: 0.5--1.5m